| /* |
| * Copyright 2014 The gRPC Authors |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package io.grpc.protobuf; |
| |
| import com.google.protobuf.Message; |
| import io.grpc.ExperimentalApi; |
| import io.grpc.Metadata; |
| import io.grpc.MethodDescriptor.Marshaller; |
| import io.grpc.protobuf.lite.ProtoLiteUtils; |
| |
| /** |
| * Utility methods for using protobuf with grpc. |
| */ |
| public final class ProtoUtils { |
| |
| /** |
| * Create a {@link Marshaller} for protos of the same type as {@code defaultInstance}. |
| * |
| * @since 1.0.0 |
| */ |
| public static <T extends Message> Marshaller<T> marshaller(final T defaultInstance) { |
| return ProtoLiteUtils.marshaller(defaultInstance); |
| } |
| |
| /** |
| * Produce a metadata key for a generated protobuf type. |
| * |
| * @since 1.0.0 |
| */ |
| public static <T extends Message> Metadata.Key<T> keyForProto(T instance) { |
| return Metadata.Key.of( |
| instance.getDescriptorForType().getFullName() + Metadata.BINARY_HEADER_SUFFIX, |
| metadataMarshaller(instance)); |
| } |
| |
| /** |
| * Produce a metadata marshaller for a protobuf type. |
| * |
| * @since 1.13.0 |
| */ |
| @ExperimentalApi("https://github.com/grpc/grpc-java/issues/4477") |
| public static <T extends Message> Metadata.BinaryMarshaller<T> metadataMarshaller(T instance) { |
| return ProtoLiteUtils.metadataMarshaller(instance); |
| } |
| |
| private ProtoUtils() { |
| } |
| } |